Steven Tamm
About Steven Tamm
Steven Tamm is a software architect and engineering executive based in the San Francisco Bay Area. Crunchbase lists a BS and an M.Eng in computer science and electrical engineering from MIT, both dated 1997. It also lists him as a past Principal Architect at Salesforce and later its CTO.
His LinkedIn profile summary describes experience in cloud computing, eCommerce, virtualization, cybersecurity, compliance and SaaS. It also cites technical M&A, corporate development and managing teams of up to 1,200 people. A profile mirror of his LinkedIn headline lists him as CTO of Scratchpay, and describes him as an advisor, investor and farmer. Spin.AI lists him as a technology advisor.
Crunchbase credits Tamm with five personal investments, all seed rounds: Perfect Price, mSURVEY, Qbox and MightyHive (listed twice). Dates are hidden on the free page. Tracxn dates his Perfect Price angel investment to October 2018. Tracxn tracks only that one deal, so public data on his earlier angel activity is incomplete.
Tamm took part in the $4M seed round of Lightsage, announced on 8 September 2026. Nexus Venture Partners led the round. Press coverage names him among the angels as a former Salesforce CTO, alongside the CEOs of Postman and Apollo GraphQL and DocuSign's president.
Lightsage, formally API-Rex Inc., is based in San Francisco. It builds what it calls Agent-Led Growth software. The product runs simulations with coding agents to show software companies where agents fail to discover, install or use their products. It is starting with developer tools. No other AI investments by Tamm were found in public sources.
His known deals are early-stage software companies in the United States, from Perfect Price and MightyHive to Lightsage's developer-tools focus. Tracxn classes his main sector as business services. His own background is in enterprise software, developer tools, SaaS and security. He has made no public statement about check size, preferred round or what he looks for in founders, and none is stated here.
- Lightsage: AI agent-led growth platform for software and developer-tool companies; $4M seed announced September 2026.
- Perfect Price: seed-stage company; Tracxn dates his angel investment to October 2018.
- MightyHive: San Francisco company; Tamm is listed as a seed investor on Crunchbase.
- mSURVEY: listed as a seed investment on Crunchbase; year not public.
- Qbox: listed as a seed investment on Crunchbase; year not public.
- siliconangle.com/2026/09/08/lightsage-gets-4m-in-funding-to-help-softw
- thenextweb.com/news/lightsage-4m-nexus-agent-led-growth-coding-agents-
- finsmes.com/2026/09/lightsage-raises-4m-in-funding.html
- crunchbase.com/person/steven-tamm
- tracxn.com/d/people/steven-tamm/__8wxI7CoPDGswDjOVkzdZcRTAuGWWgYpMO_g0
- me.sh/profile/steven-tamm
- spin.ai/author/steven
- crunchbase.com/organization/scratch-financial/people
Investing activity
Steven Tamm appears in 1 AI deal tracked by the Lounge deals desk. The rounds are mostly Seed, with a median round size of $4M. The most recent is Lightsage (Seed, $4M, Sep 2026).
Steven Tamm most often invests alongside Nexus Venture Partners, Robert Chatwani, Ivan Burazin and Hila Qu, and the companies they back on Lounge are mostly in AI.
Deals
Frequently asked questions about Steven Tamm
Who is Steven Tamm?
He is a former Salesforce CTO and an angel investor based in the San Francisco Bay Area. His LinkedIn headline lists him as CTO of Scratchpay and an advisor.
Has Steven Tamm invested in AI startups?
Yes. He was an angel in Lightsage's $4M seed round in September 2026, led by Nexus Venture Partners. Lightsage helps software companies see how AI coding agents find and use their products.
What check size does Steven Tamm write?
No check size is public. Founders should not assume a figure.
What stage does Steven Tamm invest in?
His known investments are seed rounds: Lightsage, Perfect Price, mSURVEY, Qbox and MightyHive. Crunchbase labels all five as seed. He has not published a stage preference.
What kind of founders might suit a pitch to Steven Tamm?
His known investments and background point to software, developer tools and SaaS. He has not said what he looks for, so check his LinkedIn and recent deals before pitching.
Is Steven Tamm an angel investor?
Yes. Steven Tamm invests personally as an angel.
What AI companies has Steven Tamm invested in?
Steven Tamm's AI investments include Lightsage. The 1 round on Lounge are listed on this page with amounts, dates and co-investors.
What stage does Steven Tamm invest at?
In the rounds tracked on Lounge, Steven Tamm has invested at Seed, with a median round of $4M.
Who does Steven Tamm co-invest with?
Steven Tamm's most frequent co-investors on Lounge are Nexus Venture Partners (1 deal), Robert Chatwani (1 deal), Ivan Burazin (1 deal), Hila Qu (1 deal) and Shuhao Zhang (1 deal).
How can founders reach Steven Tamm?
Founders on Lounge can see Steven Tamm's contact details in AI Investor Contacts (paid plans), check for a warm introduction through members who worked with them under Warm Paths, and add Steven Tamm to their Investor Pipeline to track the conversation.